Piper PA-28-161, Maintenance Manual

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PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 2
Nov 30/06
4G22
57-10-00
(c) Usage Class “C” - EXTREME
Aircraft which have been damaged due to operations from extremely rough runways, flight
in extreme damaging turbulence or other accident/incident which required major repair or
replacement of wing(s), landing gear or engine mount.
(d) Usage Class “D” - UNKNOWN
Aircraft and/or wings of unknown or undetermined operational or maintenance history.
(e) Factored Service Time
NOTE: This formula applies only to airplanes in Usage Class “B” - Severe. It may be
used to calculate the initial and repetitive inspection times in factored hours,
provided a portion of the airplane’s operating time-in-service has been in Usage
Class “A” - Normal.
Determine Factored Service Time as follows:
Hours in
Hours in
Example
Severe Service
+
Normal Service
=
Factored Service Hours
17
(1)
800
+
4000
=
1035
17
(2)
1000
+
50000
=
3941
17
Results
(1) Initial inspection not required at this time. Will require initial inspection when
Total Factored Service Hours reach 3700.
(2) Initial inspection required within the next 50 hours time-in-service.
(2) Inspection Requirements
(a) Next 50 Hours:
For airplanes in “Usage Class D” (i.e. - UNKNOWN usage), conduct Wing Spar
Inspection and establish usage class for next inspection based on current aircraft
operations.
(b) Each 1600 Hours:
For airplanes in “Usage Class B” (i.e. - SEVERE usage), beginning at 3700 hours
total time-in-service, and each 1600 hours thereafter, conduct Wing Spar Inspection.
For airplanes in “Usage Class C” (i.e. - EXTREME usage), conduct Wing Spar
Inspection, each 1600 hours time-in-service.
(c) Each 6000 Hours:
For airplanes in “Usage Class A” (i.e. - NORMAL usage), beginning at 62,900 hours
total time-in-service, and each 6000 hours thereafter, conduct Wing Spar Inspection.